Manse Everard, an unattached agent of the Time Patrol charged with protecting humanity's transcendent future against those who would alter Time itself, and Wanda Tamberley, a cataloger of natural history, join together to save the stability of history.

Resumen:

Manse Everard, an unattached agent of the Time Patrol charged with protecting humanity's transcendent future against those who would alter Time itself, and Wanda Tamberley, a cataloger of natural history, join together to save the stability of history.